#0B023B#0B023B

#0B023B is a very dark, moderate blue. Relative luminance 0.004; OKLCH L 17.5% C 0.102 H 277.3°. Best body text is #FFFFFF at 19.34:1 contrast (WCAG AA passes).

Color values

HEX	#0B023B
RGB	rgb(11, 2, 59)
HSL	hsl(249, 93%, 12%)
HSV	hsv(249, 97%, 23%)
CMYK	cmyk(81.4%, 96.6%, 0%, 76.9%)
CIE-LAB	lab(3.89, 21.95, -33.13)
CIE-LCH	lch(3.89, 39.74, 303.52°)
OKLab	oklab(17.48% 0.0128 -0.1007)
OKLCH	oklch(17.48% 0.102 277.3)
XYZ	xyz(0.9489, 0.4302, 4.1699)
Luminance	0.0043 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B023B #323B02

analogous

#02163B #0B023B #28023B

triadic

#0B023B #3B0B02 #023B0B

tetradic

#0B023B #3B0216 #323B02 #023B28

square

#0B023B #3B0216 #323B02 #023B28

split-complementary

#0B023B #3B2802 #163B02

monochromatic

#06011E #06011E #0B023B #160476 #2106B1

Accessibility & contrast

On white

19.34

#0B023B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.09

#0B023B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B023B

19.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B023B	#FFFFFF	#000000	##FFFFFF
##0B023B	1.00	19.34	1.09	19.34
#FFFFFF	19.34	1.00	21.00	1.00
#000000	1.09	21.00	1.00	21.00
##FFFFFF	19.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00103D

Deuteranopia (green-blind)

#000B3A

Tritanopia (blue-blind)

#00141F

Achromatopsia (no color)

#0E0E0E

Design tokens & code

CSS

--color: #0b023b;
/* rgb */ color: rgb(11, 2, 59);
/* oklch */ color: oklch(17.5% 0.102 277.3);

Tailwind

colors: {
  custom: {
    50: '#524672',
    500: '#0b023b',
    950: '#000000',
  },
}

SCSS

$custom: #0b023b;
$custom-light: #524672;
$custom-dark: #000000;

JSON

{
  "hex": "#0b023b",
  "rgb": {
    "r": 11,
    "g": 2,
    "b": 59
  },
  "hsl": {
    "h": 249.474,
    "s": 93.443,
    "l": 11.961
  },
  "oklch": {
    "l": 0.17479,
    "c": 0.10153,
    "h": 277.3
  },
  "luminance": 0.0043
}

Semantic roles & 50–950 ramp

primary

#0B023B

secondary

#6F7E1A

accent

#FF29DD

background

#F4F3F6

surface

#E8E5EC

border

#C4C1C7

text

#030008

muted

#78777B

Preview Lab

Preview with #0B023B

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →